Valve-operating mechanism



iii

March 29; 1927.

L. COATALEN vALvm OPERATING MECHANISM Filed April 29, 1926 j vide improved Patented Mar. 29, 1927.

* UNITED STATES PATENT OF LOUIS COATALEN, OI WOLVEBHAHPTON, ENGLAND.

FYICE.

vALvE-ornmrme uncmursx.

Application filed April 29, 1926, Serial No.

5 In the accompanying sheet of explanatorv drawings tionship of the cam Figure 1 is a diagrammatic view showing forte manner of-carrying the invention into effect. 1 i

Figure 2 is a diagrammatic viewof the t means employed for varying the phase relashown in Figure 1.

ing the invention into effect as shown, a pair of shafts a. 7) arranged parallel with'each other are each provided witha suitable cam c, (1. Each shaft is provided f wiit-h a gear wheel e.

- In carrv e to f through other wheels h, z. Thealat- 0' ter are carried on a movable system of links so -that anepicyclic movement can be given used.

the valve o by a th to them. Preferably three links 7'. 1:. Z are One (7') joins the shafts ot the wheels e,%h. Another (it) joins the shafts of the wheelsfi-z'. The third (Z) joins the links j,]c. The link systemis movable in any con- I venient manner. Preferably a sector m is secured to the link 7' and its toothed periphery is engaged by'a worm n which can be rotated directly or'indirectly by hand.

Motion is transmitted from the cams to ree armed lever, or an equivalent pair of levers 72, q. One end of the lever q is acted on by the cam d. and one end of the lever 71 by the other cam c. The other end. of q' engages the valve either directly or indirectly-whilst the other end of p-abuts on through an adjustable screw 1*.

ovement of the valve in the opposite direction is efi'ected by a spring 8.

With' the mechanism as above described the angular or phase relationship between I. .Motion is transmito to e from a driving wheel 9. and from 105,519, and in Great minim April 0, ms.

the cams can be varied through the medium.

of the epicyclic wheels-h, i (which otherwise serve to transmit motion from one cam shaft to the other) and consequently the duration of opening or closing of the valve can readily be varied between tlg limits for which I e position in each cycle of operation at which the valve is opened can. and would usually, be fixed, the variation being made the mechanism is desi in the period for whichjthe valve remains These conditions and others. can,

open. however, be varied to suit different ments. Further the details of the mechanism can also be varied to suit the purpose for which the invention is required.

Having thus described my invention whatclaim as new and desire to secure by Letters Pa tent *is:

.1. In valve operating mechanisms, the combination of a valve operating" lever, a

requirepair ofcams acting on said lever, means secured to one of said cams for rotating the other of said cams, whereby said cams -rotate simultaneously, and means for angus laily adjusting said t er.

2. In. valve operating mechanisms, the combinai'lioncomprising a valve operating lever, a pair of cams acting on the lever, epicyclic mechanism connecting said shafts for actuating the cams, and means wherebv the said mechanism can be moved for eflect mgszelative angular adjustment of the cams,

antially as described 3. In valve operating combination comprising a ever, a pair of non-coaxial cams acting. on .difl'erent parts oi the lever, a pair of cam shafts, onefor each cam. epicyclicmechamechanisms, the valve operating cams relatively to each nism connecting said shafts for actuating the cams, and means whereby" the said mechanism can be moved for eflecting relative angular adjustment of as'descri d. I y

4. In valve operating mechanisms, the combination comprising a valve actuating lever, a pair of non-coaxial cams acting on different parts of the levers, a gear wheel in driving connection with each cam, a pair of mutually (engaging e icyclic wheels respectively engaging the cams, substantially the other gear neaaaea .wheels, and means for imparting angular cyclic mechanism for actuating the cams, W

movement to the epicyclie wheels for eflzectand means whereby said mechanism coninisrelative angular adjustment of the cams, necting said shafts can be moved for effectsu tantiall as described. in relative angular adjustment of the cams,

5. In vs vs operating mechanisms, the su%stantially as described. combination comprising a two-part valve In testimony whereof I have signed my 15 actuating lever, 21 pair of non-coaxial cams name to this specification. acting on the two parts of the said lever, a pair of cam shafts, one for each cam, epi- LOUIS COATALEN. 

